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Published on: February 24, 2021
Interference on cytoplasmic polyadenylation element-binding proteins affects the invasion ability of glioma stem
1Department of Neurosurgery, Huaihe Hospital, Henan University, Kaifeng, China.
Abstract:
Glioma stem cells derived from primary cultures were divided into an experiment group, a control group, and a blank group and subjected to cytoplasmic polyadenilation element-binding protein (CPEBs) interference, transfection with empty vector, and normal culture, respectively, to compare their invasion abilities. Western blotting showed that siRNA-3 had the strongest interfering effect on CPEBs. CPEBs were expressed in the experiment group with green fluorescence at an expression rate of over 70%. Significantly lower CPEB expression was observed in the experiment group compared to in the control and blank groups (P < 0.05). After 48-h treatment, the apoptotic rate in the experiment group was 21.43%, which was significantly higher than that in the blank (0.51%) and control (1.43%) groups (P < 0.05). After 3 days of treatment, the experiment group grew significantly more slowly than did the control and blank groups (P < 0.05). The transwell invasion assay showed that significantly fewer cells in the experiment group penetrated the membrane than did cells in the control and blank groups (P < 0.05). After CPEB interference, the growth, proliferation, and invasion of glioma stem cells were substantially inhibited, providing support for targeted therapy of glioma and for improving prognosis.
Insights
Interfering with cytoplasmic polyadenylation element-binding proteins (CPEBs) significantly inhibits glioma stem cell growth, proliferation, and invasion. This finding supports CPEBs as a potential target for glioma therapy and improved patient prognosis.
Area of Science:
- Neuroscience
- Molecular Biology
- Oncology
Background:
- Glioma stem cells (GSCs) are crucial for tumor growth and recurrence.
- Targeting specific molecular pathways in GSCs offers a promising therapeutic strategy.
Purpose of the Study:
- To investigate the role of cytoplasmic polyadenylation element-binding proteins (CPEBs) in regulating the biological behavior of glioma stem cells.
- To evaluate the potential of CPEB interference as a therapeutic approach for glioma.
Main Methods:
- Glioma stem cells were divided into experimental (CPEB interference), control (empty vector), and blank (normal culture) groups.
- Western blotting and fluorescence assays were used to confirm CPEB interference efficiency.
- Cell proliferation, apoptosis, and invasion assays (Transwell) were performed to assess cellular changes.
Main Results:
- siRNA-3 demonstrated the highest efficiency in interfering with CPEB expression.
- CPEB expression was significantly reduced in the experimental group compared to controls (P < 0.05).
- CPEB interference led to increased apoptosis (21.43% vs. <1.5%), reduced proliferation, and significantly inhibited cell invasion (P < 0.05).
Conclusions:
- Interference with CPEBs effectively suppresses the growth, proliferation, and invasion of glioma stem cells.
- CPEBs represent a potential therapeutic target for glioma treatment.
- Targeting CPEBs may improve the prognosis of glioma patients.
